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Inline Centrifugal Blowers

The NIS-CO Inline Centrifugal Blower FanThe consolidation of the centrifugal represents a quality-built, reliable wheel in the multiple conversion vane product design providing superior equipped tube on sizes C1220 and service and performance for our larger has produced a highly efficient, customers. Incorporating the tried unusually quiet, compact unit having and proven, highly efficient “NIS-CO” stable pressure and non-overloading

Adjustable Motor Base

The Arrangement 9is equipped with a heavy-duty motor base designed to accept a standard NEMA frame motor. This base is pivoted at one end for easy, accurate belt adjustment.

Conversion Vanes

The aerodynamically designed conversion vane system not only straightens the airflow, but also assures turbulent free flow at the discharge which minimizes noise.

Note: Due to size limitations, conversion vanes are not included on size C1050. It is suggested that straightening vanes be added to duct immediately following discharge

Wheels

Centrifanin-line centrifugal units utilize airfoil bladed wheels in all sizes 27" wheel diameter and above. The flat backward curve wheel is utilized in sizes 241/2" wheel diameter and below. The airfoil wheels have been designed to produce ultra high efficiency over a broad performance range with extremely low sound generation. Hollow heavy gauge airfoil blades, aerodynamically engineered, are die formed in one piece and welded at the trailing edge. Blades are then welded in special jigs to a spun inlet section and a heavy-duty back-plate. Rugged cast iron hubs are used, with bore, keyways, and concentricity machined to close tolerances. The NIS-CO Inline Centrifugal Blower Fans airfoil bladed wheel represents the ultimate in centrifugal wheel construction and is designed for optimum trouble-free performance and longevity

Anti-Friction Bearings

Centrifanin-line centrifugal units are equipped with self-aligning single row ball bearings, double row tapered or spherical roller bearings.

Computerized selections have been made on all bearings based on radial, thrust and combined loads to give 100,000 average life hours (AFBMAL50) at the maximum design of each Inline Centrifugal Blower Fan class.

Bearings selected have effective seals to retain the lubricant and to prevent against contamination. All have extended lube lines with grease fittings for relubrication.

See table on page 7 for the type bearings used for each unit. Also listed are bearings available for 400,000 average life hours (AFBMA-L50).

NIS-CO Inline Centrifugal Blower Fans reserves the right to change bearings of equal ratings

Housing

Rugged heavy gauge steel tubular housings containing curved conversion vanes are all welded. All sizes are furnished with flanged inlet and outlet. Inner cylinder and belt duct shield bearings and drive from the airstream. Standard units are furnished with an integral adjustable motor base in Arrangement No. 9. For still more versatility, Arrangement No. 1 is available, in which the motor is located adjacent to the fan housing on a separate adjustable base and the entire assembly mounted on a common base. Arrangement No. 4, direct drive, is also available in Size C3650 and smaller.

Static and Dynamic Balancing

Complete wheel assemblies of all sizes are statically and dynamically balanced on electronically controlled balancing machines. The necessary weights are arc welded into place to insure permanent balance of the wheel. After complete Inline Centrifugal Blower Fan assembly the unit is operated as part of the rigid final inspection. Balance is again checked with portable electronic balancing equipment and refinements are made if required.

Theperformance ratings in this catalog result from test of standard equipment without accessories in place. The combining of several of the accessory items in the air stream may result in variations in air delivery from that shown in the performance tables. Where application is critical and/or unusual, it is recommended that you contact your local NIS-CO representative for engineering assistance in selection of accessory equipment.

Roof Fan

Sizes C1220 through C4900 are available for roof mounting by using a curb cap and stack hood with built in butterfly damper. Maximum velocity through butterfly damper is 3200 FPM.

Weatherproof Drive Cover Belt Guard

Drive covers as shown can be Heavy gauge metal guards are furnished when required to completely furnished for personnel protection

Thein-line centrifugal Standard construction for the are also available. Contact the factory
Inline Centrifugal Blower Fans are manufactured to AMCA Centrifanis: steel housing, bearing for pricing on special items or unusual
standard wheel diameters in sizes support, wheels and shaft. Special requirements.
C1050 throug C4900, as shown below materials, such as aluminum,
in the material specification chart. stainless steel or special coatings
CentrifansClass I CentrifansClass II
FAN SIZE HOUSING BAND BEARING HOUSING ANGLE FLANGE SHAFT DIA. 100,000 HOURS 400,000 HOURS BEARING
C1050 12 Ga. 16 Ga. 1 X 12 Ga. 1 A C
C1220 12 Ga. 16 Ga. 1 X 12 Ga. 1 A C
C1350 12 Ga. 16 Ga. 1 X 12 Ga. 1 A C
C1500 12 Ga. 14 Ga. 1 X 12 Ga. 1 A C
C1650 12 Ga. 14 Ga. 1 X 12 Ga. 1 A C
C1820 12 Ga. 14 Ga. 1 X 12 Ga. 13/16 A C
C2000 10 Ga. 12 Ga. 11/4 X 10 Ga. 13/16 A C
C2220 10 Ga. 12 Ga. 11/4 X 10 Ga. 13/16 A C
C2450 10 Ga. 12 Ga. 11/4 X 10 Ga. 17/16 A C
C2700 10 Ga. 12 Ga. 11/4 X 10 Ga. 111/16 A C
C3000 10 Ga. 12 Ga. 11/4 X 10 Ga. 111/16 A C
C3300 12 Ga. 12 Ga. 2 X 2 X 3/16 115/16 A C
C3650 12 Ga. 12 Ga. 2 X 2 X 3/16 23/16 B C
C4020 12 Ga. 12 Ga. 21/2 X21/2 X 3/16 23/16 C D
C4450 12 Ga. 12 Ga. 21/2 X21/2 X 3/16 23/16 C D
C4900 10 Ga. 10 Ga. 21/2 X21/2 X 3/16 27/16 C D
FAN SIZE HOUSING BAND BEARING HOUSING ANGLE FLANGE SHAFT DIA. 100,000 HOURS 400,000 HOURS BEARING
C1050 12 Ga. 16 Ga. 1 X 12 Ga. 1 A C
C1220 12 Ga. 16 Ga. 1 X 12 Ga. 13/16 A C
C1350 12 Ga. 16 Ga. 1 X 12 Ga. 13/16 A C
C1500 12 Ga. 14 Ga. 1 X 12 Ga. 13/16 A C
C1650 12 Ga. 14 Ga. 1 X 12 Ga. 17/16 A C
C1820 12 Ga. 14 Ga. 1 X 12 Ga. 17/16 A D
C2000 10 Ga. 12 Ga. 11/4 X 10 Ga. 17/16 C D
C2220 10 Ga. 12 Ga. 11/4 X 10 Ga. 111/16 B D
C2450 10 Ga. 12 Ga. 11/4 X 10 Ga. 111/16 B D
C2700 10 Ga. 12 Ga. 11/4 X 10 Ga. 115/16 C D
C3000 10 Ga. 12 Ga. 11/4 X 10 Ga. 115/16 C D
C3300 12 Ga. 12 Ga. 2 X 2 X 3/16 23/16 C D
C3650 12 Ga. 12 Ga. 2 X 2 X 3/16 23/16 C D
C4020 12 Ga. 12 Ga. 21/2 X21/2 X 3/16 27/16 C D
C4450 12 Ga. 12 Ga. 21/2 X21/2 X 3/16 211/16 C D
C4900 10 Ga. 10 Ga. 21/2 X21/2 X 3/16 215/16 C D

RPM 3

TIP SPEED (FPM) = 2.749 x RPM OUTLET Diameter = 141/8" MAX. HP = .0408{Area = 1.087 Ft.2 (1000 )

C1050

WHEEL DIAMETER = 101/2" INLET Diameter = 141/8" MAX. RPM{ Area = 1.087 Ft.2 CL.1 4166

CL.2 4710

VOL. OUTLET VEL. .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
435 400 1139 0.06 1403 0.10 1637 0.15 1851 0.20
544 500 1288 0.09 1522 0.14 1729 0.19 1922 0.25 2102 0.31 2273 0.38
652 600 1446 0.12 1661 0.18 1848 0.24 2022 0.31 2186 0.37 2343 0.45 2638 0.60 2912 0.78
761 700 1613 0.17 1811 0.24 1984 0.31 2143 0.38 2294 0.45 2438 0.53 2711 0.69 2968 0.87 3211 1.07 3442 1.28
870 800 1788 0.23 1968 0.31 2130 0.39 2279 0.46 2419 0.54 2553 0.63 2807 0.80 3046 0.99 3275 1.19 3493 1.40
978 900 1971 0.31 2130 0.39 2284 0.48 2424 0.57 2556 0.65 2681 0.74 2919 0.93 3144 1.13 3359 1.34 3565 1.56
1087 1000 2157 0.41 2298 0.49 2442 0.59 2576 0.69 2701 0.78 2820 0.88 3044 1.08 3256 1.29 3459 1.51 3654 1.74
1196 1100 2342 0.52 2473 0.62 2605 0.72 2733 0.82 2852 0.93 2966 1.04 3179 1.25 3380 1.48 3572 1.71 3757 1.95
1304 1200 2527 0.65 2653 0.76 2773 0.87 2893 0.98 3008 1.10 3117 1.21 3321 1.45 3513 1.68 3696 1.93 3873 2.18
1413 1300 2715 0.81 2838 0.93 2945 1.04 3057 1.16 3167 1.29 3272 1.41 3469 1.66 3653 1.92 3828 2.18 3997 2.44
1522 1400 2911 1.00 3024 1.12 3123 1.24 3226 1.37 3330 1.50 3431 1.63 3621 1.91 3799 2.18 3968 2.45 4129 2.73
1631 1500 3109 1.21 3209 1.34 3305 1.47 3399 1.60 3496 1.74 3593 1.88 3777 2.17 3949 2.46 4112 2.75 4268 3.05
1739 1600 3288 1.43 3394 1.59 3490 1.73 3576 1.86 3666 2.01 3758 2.15 3935 2.46 4102 2.77 4261 3.08 4412 3.40
1848 1700 3473 1.72 3579 1.86 3676 2.02 3758 2.16 3841 2.31 3926 2.46 4096 2.78 4259 3.11 4413 3.44 4560 3.77
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
870 800 3703 1.63 3905 1.87
978 900 3764 1.79 3956 2.03 4143 2.29 4324 2.56 4500 2.83
1087 1000 3843 1.98 4026 2.23 4204 2.49 4377 2.76 4546 3.04
1196 1100 3937 2.20 4111 2.46 4281 2.72 4447 3.00 4608 3.28
1304 1200 4044 2.44 4210 2.71 4372 2.99 4531 3.27 4686 3.56
1413 1300 4161 2.71 4320 2.99 4475 3.28 4627 3.58
1522 1400 4286 3.02 4439 3.31 4588 3.61
1631 1500 4419 3.35 4566 3.65 4709 3.96
1739 1600 4558 3.71 4699 4.03
1848 1700 4701 4.11

Power rating (BHP) does not include drive losses. Performance shown is fors with outlet duct. Data in bold face indicates quietest and most efficient performance.

Class I Inline Centrifugal Blower Fans

Class II Inline Centrifugal Blower Fans

RPM 3

TIP SPEED (FPM) = 3.207 x RPM OUTLET Diameter = 169/16" MAX. HP = .1099{Area = 1.50 Ft.2 (1000 )

C1220

WHEEL DIAMETER = 121/4" INLET Diameter = 169/16" MAX. RPM{ Area = 1.50 Ft.2 CL.1 3273

CL.2 4072

VOL. OUTLET VEL. .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
600 400 793 0.05 1036 0.10 1248 0.16
750 500 875 0.07 1080 0.12 1272 0.19 1448 0.26 1609 0.33
900 600 975 0.10 1147 0.16 1316 0.22 1477 0.30 1629 0.38 1771 0.46
1050 700 1086 0.14 1231 0.20 1379 0.27 1524 0.34 1663 0.43 1797 0.52 2046 0.72 2274 0.93
1200 800 1201 0.19 1329 0.25 1457 0.33 1587 0.41 1714 0.49 1837 0.59 2072 0.79 2292 1.02 2496 1.26
1350 900 1318 0.25 1435 0.32 1548 0.40 1663 0.48 1778 0.57 1891 0.67 2110 0.88 2319 1.11 2516 1.36 2702 1.63
1500 1000 1439 0.32 1547 0.40 1648 0.49 1751 0.57 1854 0.67 1958 0.77 2161 0.99 2357 1.23 2545 1.48 2724 1.75
1650 1100 1563 0.42 1662 0.50 1755 0.59 1847 0.68 1941 0.78 2035 0.88 2222 1.11 2406 1.35 2584 1.62 2755 1.90
1800 1200 1692 0.53 1778 0.62 1866 0.71 1951 0.81 2036 0.91 2121 1.02 2294 1.25 2465 1.50 2633 1.77 2796 2.06
1950 1300 1824 0.66 1897 0.75 1980 0.85 2059 0.95 2137 1.06 2216 1.17 2375 1.41 2534 1.67 2691 1.95 2846 2.24
2100 1400 1954 0.81 2017 0.90 2096 1.01 2171 1.12 2244 1.23 2316 1.35 2463 1.59 2611 1.86 2758 2.14 2904 2.44
2250 1500 2082 0.97 2141 1.07 2214 1.19 2285 1.31 2354 1.43 2421 1.55 2557 1.80 2695 2.07 2833 2.36 2971 2.67
2400 1600 2211 1.17 2267 1.27 2333 1.39 2401 1.52 2467 1.64 2530 1.77 2657 2.03 2786 2.31 2915 2.61 3044 2.92
2550 1700 2349 1.40 2397 1.49 2453 1.61 2518 1.75 2582 1.88 2642 2.02 2762 2.29 2882 2.58 3003 2.88 3125 3.20
2700 1800 2473 1.63 2528 1.75 2576 1.86 2637 2.00 2698 2.15 2756 2.29 2870 2.58 2982 2.87 3096 3.19 3211 3.51
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1500 1000 2896 2.04 3060 2.34 3218 2.65
1650 1100 2921 2.19 3081 2.50 3234 2.82 3382 3.15 3525 3.49
1800 1200 2955 2.36 3108 2.68 3257 3.00 3402 3.34 3542 3.69 3678 4.05 3809 4.42 3937 4.80
1950 1300 2997 2.55 3144 2.87 3288 3.21 3428 3.56 3564 3.92 3697 4.29 3826 4.67 3952 5.05
2100 1400 3048 2.76 3189 3.09 3327 3.43 3462 3.79 3594 4.16 3723 4.53 3849 4.92 3972 5.32
2250 1500 3107 2.99 3241 3.33 3373 3.68 3503 4.04 3630 4.42 3755 4.81 3878 5.20 3998 5.61
2400 1600 3173 3.25 3301 3.60 3427 3.96 3552 4.33 3674 4.71 3795 5.10 3913 5.50 4030 5.92
2550 1700 3247 3.54 3368 3.89 3488 4.26 3607 4.63 3725 5.02 3841 5.42 3955 5.83 4068 6.26
2700 1800 3326 3.86 3441 4.22 3556 4.59 3669 4.97 3782 5.37 3894 5.77 4004 6.19
2850 1900 3411 4.20 3520 4.57 3629 4.95 3738 5.34 3846 5.74 3953 6.15 4059 6.58
3000 2000 3501 4.58 3605 4.96 3708 5.34 3812 5.74 3915 6.15 4018 6.57
3300 2200 3694 5.45 3788 5.83 3881 6.23 3976 6.64 4070 7.06
3600 2400 3901 6.46 3986 6.86 4071 7.27

Power rating (BHP) does not include drive losses. Performance shown is fors with outlet duct. Data in bold face indicates quietest and most efficient performance.

Class I Inline Centrifugal Blower Fans

RPM 3

TIP SPEED (FPM) = 3.534 x RPM OUTLET Diameter = 183/8" MAX. HP = .1787{Area = 1.84 Ft.2 (1000 )

C1350

WHEEL DIAMETER = 131/2" INLET Diameter = 183/8" MAX. RPM{ Area = 1.84 Ft.2 CL.1 2871

CL.2 3693

VOL. OUTLET VEL. .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
736 400 720 0.06 940 0.12 1132 0.19
920 500 794 0.09 980 0.15 1154 0.23 1314 0.31 1460 0.40
1104 600 885 0.12 1041 0.19 1195 0.27 1340 0.36 1478 0.46 1607 0.56
1288 700 985 0.17 1117 0.24 1251 0.33 1383 0.42 1509 0.52 1631 0.63 1857 0.87 2064 1.13
1472 800 1090 0.23 1206 0.31 1323 0.40 1440 0.49 1555 0.60 1667 0.71 1880 0.96 2079 1.23 2265 1.53
1656 900 1196 0.30 1302 0.39 1405 0.48 1509 0.59 1613 0.70 1716 0.81 1915 1.07 2104 1.35 2283 1.65 2452 1.97
1840 1000 1306 0.39 1403 0.49 1495 0.59 1589 0.70 1683 0.81 1776 0.93 1961 1.20 2139 1.49 2309 1.80 2472 2.13
2024 1100 1418 0.50 1508 0.61 1592 0.72 1676 0.83 1761 0.95 1847 1.07 2017 1.35 2183 1.64 2344 1.96 2500 2.30
2208 1200 1535 0.64 1614 0.75 1693 0.86 1770 0.98 1847 1.10 1925 1.23 2082 1.52 2237 1.82 2389 2.15 2537 2.50
2392 1300 1655 0.80 1721 0.91 1797 1.03 1868 1.16 1939 1.29 2010 1.42 2155 1.71 2299 2.03 2442 2.36 2582 2.72
2576 1400 1773 0.98 1831 1.09 1902 1.23 1970 1.36 2036 1.50 2102 1.64 2235 1.93 2369 2.26 2503 2.60 2635 2.97
2760 1500 1889 1.18 1942 1.30 2009 1.44 2074 1.59 2136 1.73 2197 1.88 2320 2.19 2445 2.52 2571 2.87 2696 3.24
2944 1600 2006 1.42 2057 1.54 2117 1.68 2179 1.84 2238 2.00 2296 2.15 2411 2.47 2528 2.81 2645 3.17 2763 3.55
3128 1700 2131 1.70 2175 1.82 2226 1.96 2285 2.12 2343 2.29 2398 2.45 2506 2.78 2615 3.13 2725 3.50 2835 3.89
3312 1800 2244 1.98 2294 2.13 2337 2.26 2393 2.43 2448 2.61 2501 2.78 2604 3.13 2706 3.49 2809 3.87 2914 4.27
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1840 1000 2628 2.48 2777 2.84 2920 3.21
2024 1100 2651 2.66 2795 3.04 2935 3.42 3069 3.82 3199 4.24 3324 4.66
2208 1200 2681 2.87 2821 3.25 2956 3.65 3087 4.06 3214 4.49 3337 4.92 3457 5.37 3573 5.83
2392 1300 2719 3.10 2853 3.49 2984 3.90 3111 4.32 3234 4.76 3355 5.20 3472 5.67 3586 6.14
2576 1400 2766 3.35 2894 3.75 3019 4.17 3141 4.60 3261 5.05 3378 5.51 3493 5.98 3604 6.46
2760 1500 2819 3.64 2941 4.05 3061 4.47 3179 4.91 3294 5.37 3408 5.84 3519 6.32 3628 6.81
2944 1600 2880 3.95 2995 4.37 3110 4.80 3223 5.25 3334 5.72 3443 6.19 3551 6.69 3657 7.19
3128 1700 2946 4.30 3056 4.73 3165 5.17 3273 5.63 3380 6.10 3485 6.59 3589 7.08 3692 7.60
3312 1800 3018 4.68 3123 5.12 3226 5.57 3330 6.04 3432 6.52 3533 7.01 3633 7.52
3496 1900 3095 5.11 3194 5.55 3293 6.01 3392 6.48 3490 6.97 3587 7.47 3683 7.99
3680 2000 3177 5.57 3271 6.02 3365 6.48 3459 6.97 3553 7.46 3646 7.98
4048 2200 3352 6.62 3437 7.08 3522 7.57 3607 8.07 3693 8.58
4416 2400 3540 7.84 3617 8.33

Power rating (BHP) does not include drive losses. Performance shown is fors with outlet duct. Data in bold face indicates quietest and most efficient performance.

Class I Inline Centrifugal Blower Fans

RPM 3

TIP SPEED (FPM) = 3.927 x RPM OUTLET Diameter = 203/8" MAX. HP = .2937{Area = 2.26 Ft.2 (1000 )

C1500

WHEEL DIAMETER = 15" INLET Diameter = 203/8" MAX. RPM{ Area = 2.26 Ft.2 CL.1 2458

CL.2 3241

CL.3 3699

VOL. CFM OUTLET VEL. FPM .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1356 1582 1808 600 700 800 778 865 958 0.14 0.19 0.26 921 985 1061 0.22 0.27 0.35 1067 1110 1168 0.32 0.37 0.45 1207 1234 1277 0.43 0.49 0.57 1339 1355 1386 0.55 0.62 0.70 1472 1493 0.76 0.84 1698 — 1.16 — — — — — — — — — — — — — — — — —
2034 2260 2486 900 1000 1100 1054 1153 1255 0.34 0.45 0.58 1144 1233 1325 0.44 0.55 0.68 1238 1316 1400 0.54 0.66 0.80 1333 1400 1476 0.66 0.78 0.93 1431 1487 1553 0.80 0.92 1.07 1528 1575 1632 0.95 1.07 1.22 1718 1749 1791 1.27 1.40 1.55 1900 1919 1949 1.63 1.77 1.93 2083 2103 2.17 2.33 2240 2253 — 2.59 2.77 —
2712 2938 3164 1200 1300 1400 1358 1459 1560 0.73 0.90 1.10 1420 1517 1617 0.84 1.02 1.23 1488 1579 1672 0.96 1.15 1.37 1557 1642 1731 1.10 1.29 1.52 1627 1706 1790 1.24 1.44 1.67 1698 1771 1849 1.39 1.60 1.83 1843 1903 1970 1.73 1.94 2.18 1989 2037 2094 2.11 2.32 2.57 2133 2172 2219 2.52 2.74 2.99 2275 2305 2344 2.96 3.19 3.44
3390 3616 3842 1500 1600 1700 1660 1763 1869 1.32 1.58 1.89 1718 1821 1923 1.48 1.76 2.07 1768 1866 1965 1.62 1.90 2.22 1822 1915 2011 1.77 2.06 2.38 1877 1966 2058 1.93 2.22 2.55 1932 2018 2107 2.10 2.40 2.73 2044 2122 2204 2.45 2.76 3.11 2158 2228 2303 2.84 3.16 3.51 2274 2336 2403 3.27 3.59 3.95 2391 2445 2505 3.73 4.05 4.41
4068 4294 1800 1900 1976 2081 2.23 2.60 2025 2126 2.41 2.79 2067 2169 2.57 2.97 2108 2207 2.74 3.14 2152 2247 2.92 3.32 2197 2290 3.10 3.51 2289 2376 3.49 3.92 2381 2463 3.91 4.34 2475 2552 4.35 4.79 2571 2641 4.82 5.27
4520 4972 2000 2200 2184 2408 3.00 4.02 2226 2429 3.20 4.14 2271 2475 3.41 4.41 2307 2510 3.58 4.61 2344 2543 3.77 4.80 2384 2577 3.96 5.00 2466 2650 4.38 5.44 2548 2724 4.82 5.91 2631 2799 5.28 6.39 2716 2875 5.76 6.89
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2712 1200 2413 3.43 2548 3.92 2677 4.43
2938 1300 2437 3.66 2565 4.16 2691 4.68 2813 5.22 2931 5.77
3164 1400 2468 3.92 2591 4.43 2711 4.96 2829 5.51 2944 6.08 3056 6.67 3166 7.26
3390 1500 2508 4.21 2623 4.73 2738 5.26 2851 5.83 2962 6.41 3071 7.00 3178 7.62 3282 8.25 3385 8.89
3616 1600 2554 4.54 2664 5.06 2772 5.60 2880 6.17 2987 6.76 3092 7.37 3195 7.99 3297 8.64 3397 9.29 3495 9.96
3842 1700 2608 4.91 2711 5.43 2814 5.98 2916 6.55 3018 7.14 3119 7.76 3218 8.40 3317 9.05 3414 9.72 3509 10.40
4068 1800 2667 5.32 2764 5.84 2861 6.39 2959 6.97 3056 7.57 3152 8.19 3247 8.84 3342 9.50 3436 10.18 3529 10.87
4294 1900 2732 5.77 2823 6.30 2915 6.86 3007 7.44 3099 8.04 3191 8.67 3283 9.31 3374 9.98 3464 10.67 3553 11.37
4520 2000 2801 6.27 2887 6.80 2974 7.36 3061 7.95 3149 8.56 3237 9.19 3324 9.84 3411 10.51 3498 11.20 3584 11.91
4972 2200 2951 7.41 3028 7.96 3106 8.53 3185 9.12 3264 9.74 3343 10.38 3423 11.04 3502 11.72 3582 12.42 3661 13.14
5424 2400 3113 8.76 3183 9.33 3253 9.91 3324 10.51 3395 11.14 3467 11.78 3540 12.45 3613 13.14 3685 13.85
5876 2600 3284 10.33 3348 10.91 3412 11.51 3476 12.13 3541 12.77 3607 13.42 3673 14.10
6328 2800 3462 12.12 3520 12.73 3579 13.35 3639 13.99 3698 14.64

Power rating (BHP) does not include drive losses. Performance shown is fors with outlet duct. Data in bold face indicates quietest and most efficient performance.

Class I Inline Centrifugal Blower Fans

Class III Inline Centrifugal Blower Fans

RPM 3

TIP SPEED (FPM) = 4.320 x RPM OUTLET Diameter = 223/8" MAX. HP = .4730{Area = 2.73 Ft.2 (1000 )

C1650

WHEEL DIAMETER = 161/2" INLET Diameter = 223/8" MAX. RPM{ Area = 2.73 Ft.2 CL.1 2402

CL.2 3165

CL.3 3473

VOL. CFM OUTLET VEL. FPM .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1638 1911 2184 600 700 800 708 787 871 0.17 0.23 0.31 838 896 964 0.26 0.33 0.42 970 1009 1062 0.38 0.45 0.54 1097 1122 1161 0.52 0.59 0.69 1217 1232 1260 0.67 0.75 0.85 — 1338 1358 — 0.92 1.02 — — 1544 — — 1.41 — — — — — — — — — — — — — — — — — —
2457 2730 3003 900 1000 1100 958 1049 1141 0.41 0.54 0.70 1040 1121 1204 0.53 0.66 0.82 1125 1196 1272 0.66 0.80 0.97 1212 1273 1341 0.80 0.95 1.12 1301 1352 1412 0.97 1.11 1.29 1389 1431 1483 1.15 1.29 1.47 1562 1590 1628 1.54 1.69 1.88 1727 1745 1772 1.97 2.14 2.33 — 1894 1912 — 2.62 2.82 — 2036 2048 — 3.13 3.35
3276 3549 3822 1200 1300 1400 1234 1327 1418 0.88 1.09 1.33 1291 1379 1470 1.01 1.23 1.49 1352 1435 1520 1.16 1.39 1.66 1415 1493 1573 1.33 1.56 1.83 1479 1551 1627 1.50 1.74 2.02 1543 1610 1681 1.68 1.93 2.21 1675 1730 1791 2.09 2.35 2.64 1808 1852 1904 2.55 2.81 3.10 1939 1975 2018 3.05 3.31 3.61 2068 2096 2131 3.59 3.86 4.16
4095 4368 4641 1500 1600 1700 1509 1603 1699 1.60 1.92 2.28 1562 1655 1748 1.79 2.13 2.50 1607 1696 1787 1.96 2.30 2.68 1656 1741 1828 2.14 2.49 2.88 1706 1788 1871 2.34 2.69 3.09 1756 1834 1915 2.54 2.90 3.31 1858 1929 2003 2.97 3.34 3.76 1962 2025 2093 3.44 3.82 4.25 2067 2123 2185 3.96 4.34 4.78 2174 2223 2277 4.51 4.90 5.34
4914 5187 1800 1900 1796 1892 2.69 3.14 1841 1932 2.92 3.37 1879 1972 3.12 3.60 1916 2006 3.31 3.80 1956 2043 3.53 4.02 1998 2082 3.75 4.25 2081 2160 4.23 4.74 2165 2239 4.73 5.25 2250 2320 5.26 5.80 2337 2401 5.83 6.37
5460 6006 2000 2200 1985 2189 3.63 4.87 2023 2208 3.87 5.01 2065 2250 4.13 5.33 2097 2282 4.33 5.58 2131 2312 4.56 5.81 2167 2343 4.80 6.05 2242 2409 5.30 6.59 2317 2477 5.83 7.15 2392 2545 6.39 7.73 2469 2613 6.97 8.34
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3276 1200 2194 4.15 2316 4.74 2434 5.36
3549 1300 2215 4.43 2332 5.04 2446 5.67 2557 6.32 2665 6.99
3822 1400 2244 4.75 2355 5.36 2464 6.00 2571 6.67 2676 7.35 2778 8.07 2878 8.79
4095 1500 2280 5.10 2385 5.72 2489 6.37 2592 7.05 2693 7.75 2792 8.48 2889 9.22 2984 9.98 3077 10.75
4368 1600 2322 5.49 2421 6.12 2520 6.78 2618 7.47 2715 8.18 2811 8.91 2905 9.67 2997 10.45 3088 11.24 3177 12.06
4641 1700 2371 5.94 2464 6.57 2558 7.23 2651 7.93 2743 8.65 2835 9.39 2926 10.16 3015 10.95 3103 11.76 3190 12.59
4914 1800 2425 6.43 2513 7.07 2601 7.74 2690 8.43 2778 9.16 2865 9.91 2952 10.69 3038 11.49 3124 12.31 3208 13.15
5187 1900 2483 6.98 2566 7.62 2650 8.29 2734 9.00 2818 9.73 2901 10.49 2984 11.27 3067 12.08 3149 12.91 3230 13.76
5460 2000 2546 7.59 2625 8.23 2704 8.91 2783 9.62 2863 10.35 2942 11.12 3022 11.90 3101 12.72 3180 13.56 3258 14.42
6006 2200 2683 8.97 2753 9.63 2824 10.32 2895 11.04 2967 11.78 3039 12.55 3111 13.35 3184 14.18 3256 15.03 3328 15.90
6552 2400 2830 10.60 2893 11.28 2957 11.99 3022 12.72 3087 13.47 3152 14.26 3218 15.07 3284 15.90 3350 16.76 3417 17.64
7098 2600 2986 12.50 3043 13.20 3102 13.93 3160 14.68 3219 15.45 3279 16.24 3339 17.06 3399 17.91 3460 18.77
7644 2800 3147 14.67 3200 15.40 3254 16.15 3308 16.93 3362 17.72 3417 18.53 3472 19.36

Power rating (BHP) does not include drive losses. Performance shown is fors with outlet duct. Data in bold face indicates quietest and most efficient performance.

Class I Inline Centrifugal Blower Fans

RPM 3

TIP SPEED (FPM) = 4.778 x RPM OUTLET Diameter = 2411/16" MAX. HP = .7279{Area = 3.32 Ft.2 (1000 )

C1820

WHEEL DIAMETER = 181/4" INLET Diameter = 2411/16" MAX. RPM{ Area = 3.32 Ft.2 CL.1 2069

CL.2 2741

CL.3 3221

VOL. CFM OUTLET VEL. FPM .25 S.P. .5 S.P. .75 S.P. 1 S.P. 1.25 S.P. 1.5 S.P. 2 S.P. 2.5 S.P. 3 S.P. 3.5 S.P.
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1992 2324 2656 600 700 800 670 748 828 0.22 0.30 0.41 778 839 910 0.32 0.42 0.54 894 935 991 0.46 0.55 0.68 1009 1034 1075 0.62 0.71 0.84 1121 1134 1162 0.80 0.90 1.02 — 1231 1250 — 1.10 1.22 — — 1421 — — 1.67 — — — — — — — — — — — — — — — — — —
2988 3320 3652 900 100 1100 909 992 1076 0.54 0.70 0.90 987 1066 1145 0.69 0.87 1.09 1057 1130 1207 0.84 1.03 1.26 1130 1194 1264 1.00 1.20 1.44 1205 1259 1322 1.18 1.38 1.63 1282 1327 1382 1.38 1.58 1.83 1437 1466 1506 1.84 2.04 2.29 1589 1605 1633 2.35 2.56 2.80 1734 1742 1760 2.91 3.12 3.37 — 1875 1885 — 3.73 3.99
3984 4316 4648 1200 1300 1400 1162 1248 1336 1.13 1.40 1.72 1226 1307 1390 1.33 1.62 1.94 1285 1365 1445 1.53 1.84 2.18 1339 1417 1496 1.72 2.05 2.41 1392 1466 1542 1.91 2.25 2.63 1445 1514 1587 2.12 2.46 2.86 1556 1614 1678 2.58 2.92 3.33 1671 1718 1773 3.10 3.44 3.85 1787 1824 1870 3.67 4.01 4.42 1903 1932 1969 4.29 4.64 5.04
4980 5312 5644 1500 1600 1700 1425 1515 1603 2.08 2.50 2.96 1474 1560 1645 2.32 2.74 3.21 1526 1608 1691 2.57 3.01 3.49 1575 1655 1736 2.82 3.82 3.79 1621 1700 1780 3.07 3.54 4.07 1664 1741 1820 3.30 3.80 4.35 1748 1821 1896 3.79 4.31 4.88 1834 1900 1970 4.31 4.84 5.43 1923 1982 2046 4.88 5.42 6.02 2014 2065 2123 5.51 6.04 6.64
5976 6308 1800 1900 1687 1772 3.45 3.99 1732 1819 3.74 4.34 1774 1859 4.04 4.64 1817 1900 4.34 4.96 1860 1940 4.65 5.29 1900 1980 4.95 5.61 1974 2052 5.52 6.22 2044 2120 6.09 6.82 2114 2186 6.69 7.43 2186 2253 7.32 8.07
6640 7304 2000 2200 1876 2045 4.75 6.17 1907 2087 4.99 6.54 1945 2117 5.31 6.84 1983 2152 5.64 7.20 2022 2187 5.98 7.57 2060 2222 6.32 7.94 2131 2291 6.98 8.69 2197 2354 7.62 9.41 2260 2414 8.25 10.10 2323 2471 8.90 10.80
VOL. OUTLET VEL. 4 S.P. 4.5 S.P. 5 S.P. 5.5 S.P. 6 S.P. 6.5 S.P. 7 S.P. 7.5 S.P. 8 S.P. 8.5 S.P.
CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3984 1200 2018 4.95 2131 5.65 2241 6.38